Means for securing pulleys to shafts



(No Model.)

0.9. SMALLBY.` Y MEANS FOR SECURING PULLEYS T0 SHAI'FTS. No. 357,238.7

. Patented Feb. 8, 1887.

WMM @oom UtuTnDv STATES PATENT OFFICE.

CLARENCE CHRISTIAN SMALLEY, OF MANITSOWOC, WISCONSIN.

MEANS FOR SECURING PULLEYS TO SHYAFTS.

SPECIFICATION forming pari'. of Letters Patent No. 357,238, datedFebruary 8, 1887.

Application led May 6, 1886. Serial No. 201,330. (No model.)

To @ZZ whom it may concern:

Be it known that I, CLARENCE CHRISTIAN SMALLEY, a citizen of the UnitedStates, residing at Manitowoc, in the county of Manitowoc and State ofWisconsin, have invented certain new and-useful Improvements in Meansfor Securing Fly-Wheels and Pulleys to Shafts; and I do hereby declarethat the following isa full, clear, and exact description of the same,reference being had to the annexed drawing, making a part'of thisspecification, and to the letters and iigures of reference markedthereon.

The object of the present invention is to provide means forr attachingthe iiy-wheels.

and belt-pulleys to the ends of rotary drivingshafts for all classes ofmachinery-such as feedcutters and like machines where a rotarydriving-shaft is employed; and it consists in providing each end of saidshaft with tapering bearings and right and left screw-threadedextremities for the reception of screw-threaded nuts to hold in place onthe bearings the tapering hubs'of the fly-wheel and pnl1ey as will behereinafter described and claimed. Y

In the accompanying drawing I have'shown a top View of a feed-cutter tobetter illustrate the application of my invention, the fly-wheel,pulley, and nuts being in section.

The rotary driving-shaft A, in the present'` instance, I have shown asprovided with the usual cutting-knives employed for cutting the feed.This shaft at its ends has tapering bearings B, to'receive thecorrespondiugly-tapering hubs a b of a iiy-wheel, C, and belt-pulley D,

tact with the knives, which iwill produce a sudden jar upon the rotaryshaft and tends to stop its velocity, the Iiy-Wheel will turn on thetapering bearing, thereby loosening the nut,

5o which immediately frees the ily-Wheel and prevents anypossibility ofaccident to the machine. 'Ihe same result is obtained from the beltrunning on the pulley. A sudden jar or unusual obstruction meeting theknives, the belt will loosen the pulley.

The essential feature of my invention is, providing both ends of therotary driving-shaft .with tapering bearings and right and left changingthe nuts tothe opposite ends of the y shaft.

It will be noticed that the hubs of both iiy- Wheel and pulley are ofsufficient length that when on the shaft the outer ends thereof willyextend slightly beyond the tapering bearings and over the thread on theextremities,so that when the nuts are tightened up they will have abearing-surface on the hubs.

Having now fully described my invention, what I claim as new, and desireto secure by Letters Patent, isv A driving-shaft having at each end atapering bearing terminating in a screw-threaded extension, and keysattached to their extremities, vin combination with the belt-pulley andfiy-Wheel having tapering hubs to fit over the bearings of the shaft,and of sufficient length to project a short distance over thescrewthreads, I'and nuts engaging the screw-threaded extensions andbearing with frictional contact against the hubs, a space being leftbetween the nuts and keys to admit of the former being loosened by anysudden jar upon the pulley or wheel, substantially as and for thepurpose set forth. 'In testimony that I claim the above I have -hereuntosubscribed my name in the presence

